OOOpenGLMatrixManager Class Reference

#include <OOOpenGLMatrixManager.h>

Inheritance diagram for OOOpenGLMatrixManager:

Collaboration diagram for OOOpenGLMatrixManager:

Instance Methods
(id)	- init
(void)	- dealloc
(void)	- loadModelView:
(void)	- resetModelView
(void)	- multModelView:
(void)	- translateModelView:
(void)	- rotateModelView:axis:
(void)	- scaleModelView:
(void)	- lookAtWithEye:center:up:
(void)	- pushModelView
(OOMatrix)	- popModelView
(OOMatrix)	- getModelView
(NSUInteger)	- countModelView
(void)	- syncModelView
(void)	- loadProjection:
(void)	- multProjection:
(void)	- translateProjection:
(void)	- rotateProjection:axis:
(void)	- scaleProjection:
(void)	- frustumLeft:right:bottom:top:near:far:
(void)	- orthoLeft:right:bottom:top:near:far:
(void)	- perspectiveFovy:aspect:zNear:zFar:
(void)	- resetProjection
(void)	- pushProjection
(OOMatrix)	- popProjection
(OOMatrix)	- getProjection
(void)	- syncProjection
(OOMatrix)	- getMatrix:
(NSArray *)	- standardMatrixUniformLocations:
(void)	- updateModelView [implementation]
(void)	- updateProjection [implementation]

Private Attributes
OOMatrix	matrices [OOLITE_GL_MATRIX_END]
BOOL	valid [OOLITE_GL_MATRIX_END]
OOOpenGLMatrixStack *	modelViewStack
OOOpenGLMatrixStack *	projectionStack

Detailed Description

Definition at line 63 of file OOOpenGLMatrixManager.h.

Method Documentation

countModelView

- (NSUInteger) countModelView

Definition at line 605 of file OOOpenGLMatrixManager.m.

{
    return [modelViewStack stackCount];
}

References getMatrix:.

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dealloc

- (void) dealloc

Definition at line 605 of file OOOpenGLMatrixManager.m.

{
    [modelViewStack release];
    [projectionStack release];
    [super dealloc];
}

frustumLeft:right:bottom:top:near:far:

- (void) frustumLeft:		(double)	l
right:		(double)	r
bottom:		(double)	b
top:		(double)	t
near:		(double)	n
far:		(double)	f

Definition at line 605 of file OOOpenGLMatrixManager.m.

                    : (double) l right: (double) r bottom: (double) b top: (double) t near: (double) n far: (double) f
{
    if (l == r || t == b || n == f || n <= 0 || f <= 0) return;
    [self multProjection: OOMatrixConstruct
    (
          2*n/(r-l),        0.0,         0.0,    0.0,
            0.0,      2*n/(t-b),         0.0,    0.0,
        (r+l)/(r-l),    (t+b)/(t-b),    -(f+n)/(f-n),   -1.0,
            0.0,        0.0,    -2*f*n/(f-n),    0.0
    )];
}

Referenced by OOGLFrustum().

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getMatrix:

- (OOMatrix) getMatrix:

(int)

which

Definition at line 605 of file OOOpenGLMatrixManager.m.

                      : (int) which
{
    if (which < 0 || which >= OOLITE_GL_MATRIX_END) return kIdentityMatrix;
    if (valid[which]) return matrices[which];
    OOScalar d;
    switch(which)
    {
    case OOLITE_GL_MATRIX_MODELVIEW_PROJECTION:
        matrices[which] = OOMatrixMultiply(matrices[OOLITE_GL_MATRIX_MODELVIEW], matrices[OOLITE_GL_MATRIX_PROJECTION]);
        break;
    case OOLITE_GL_MATRIX_NORMAL:
        matrices[which] = matrices[OOLITE_GL_MATRIX_MODELVIEW];
        matrices[which].m[3][0] = 0.0;
        matrices[which].m[3][1] = 0.0;
        matrices[which].m[3][2] = 0.0;
        matrices[which].m[0][3] = 0.0;
        matrices[which].m[1][3] = 0.0;
        matrices[which].m[2][3] = 0.0;
        matrices[which].m[3][3] = 1.0;
        matrices[which] = OOMatrixTranspose(OOMatrixInverseWithDeterminant(matrices[which], &d));
        if (d != 0.0)
        {
            d = powf(fabsf(d), 1.0/3);
            for (int i = 0; i < 3; i++)
            {
                for (int j = 0; j < 3; j++)
                {
                    matrices[which].m[i][j] /= d;
                }
            }
        }
        break;
    case OOLITE_GL_MATRIX_MODELVIEW_INVERSE:
        matrices[which] = OOMatrixInverse(matrices[OOLITE_GL_MATRIX_MODELVIEW]);
        break;
    case OOLITE_GL_MATRIX_PROJECTION_INVERSE:
        matrices[which] = OOMatrixInverse(matrices[OOLITE_GL_MATRIX_PROJECTION]);
        break;
    case OOLITE_GL_MATRIX_MODELVIEW_PROJECTION_INVERSE:
        matrices[which] = OOMatrixInverse([self getMatrix: OOLITE_GL_MATRIX_MODELVIEW_PROJECTION]);
        break;
    case OOLITE_GL_MATRIX_MODELVIEW_TRANSPOSE:
        matrices[which] = OOMatrixTranspose(matrices[OOLITE_GL_MATRIX_MODELVIEW]);
        break;
    case OOLITE_GL_MATRIX_PROJECTION_TRANSPOSE:
        matrices[which] = OOMatrixTranspose(matrices[OOLITE_GL_MATRIX_PROJECTION]);
        break;
    case OOLITE_GL_MATRIX_MODELVIEW_PROJECTION_TRANSPOSE:
        matrices[which] = OOMatrixTranspose([self getMatrix: OOLITE_GL_MATRIX_MODELVIEW_PROJECTION]);
        break;
    case OOLITE_GL_MATRIX_MODELVIEW_INVERSE_TRANSPOSE:
        matrices[which] = OOMatrixTranspose([self getMatrix: OOLITE_GL_MATRIX_MODELVIEW_INVERSE]);
        break;
    case OOLITE_GL_MATRIX_PROJECTION_INVERSE_TRANSPOSE:
        matrices[which] = OOMatrixTranspose([self getMatrix: OOLITE_GL_MATRIX_PROJECTION_INVERSE]);
        break;
    case OOLITE_GL_MATRIX_MODELVIEW_PROJECTION_INVERSE_TRANSPOSE:
        matrices[which] = OOMatrixTranspose([self getMatrix: OOLITE_GL_MATRIX_MODELVIEW_PROJECTION_INVERSE]);
        break;
    }
    valid[which] = YES;
    return matrices[which];
}

Referenced by countModelView.

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getModelView

- (OOMatrix) getModelView

Definition at line 605 of file OOOpenGLMatrixManager.m.

{
    return matrices[OOLITE_GL_MATRIX_MODELVIEW];
}

Referenced by OOGLGetModelView().

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getProjection

- (OOMatrix) getProjection

Definition at line 605 of file OOOpenGLMatrixManager.m.

{
    return matrices[OOLITE_GL_MATRIX_PROJECTION];
}

Referenced by OOGLGetProjection().

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init

- (id) init

Definition at line 605 of file OOOpenGLMatrixManager.m.

{
    if ((self = [super init]))
    {
        int i;
        for (i = 0; i < OOLITE_GL_MATRIX_END; i++)
        {
            switch(i)
            {
            case OOLITE_GL_MATRIX_MODELVIEW:
            case OOLITE_GL_MATRIX_PROJECTION:
                matrices[i] = kIdentityMatrix;
                valid[i] = YES;
                break;
 
            default:
                valid[i] = NO;
                break;
            }
        }
        modelViewStack = [[OOOpenGLMatrixStack alloc] init];
        projectionStack = [[OOOpenGLMatrixStack alloc] init];
    }
    return self;
}

loadModelView:

- (void) loadModelView:

(OOMatrix)

matrix

Definition at line 605 of file OOOpenGLMatrixManager.m.

                      : (OOMatrix) matrix
{
    matrices[OOLITE_GL_MATRIX_MODELVIEW] = matrix;
    [self updateModelView];
    return;
}

Referenced by OOGLLoadModelView().

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loadProjection:

- (void) loadProjection:

(OOMatrix)

matrix

Definition at line 605 of file OOOpenGLMatrixManager.m.

                       : (OOMatrix) matrix
{
    matrices[OOLITE_GL_MATRIX_PROJECTION] = matrix;
    [self updateProjection];
    return;
}

Referenced by OOGLLoadProjection().

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lookAtWithEye:center:up:

- (void) lookAtWithEye:		(Vector)	eye
center:		(Vector)	center
up:		(Vector)	up

Definition at line 605 of file OOOpenGLMatrixManager.m.

                      : (Vector) eye center: (Vector) center up: (Vector) up
{
    Vector k = vector_normal(vector_subtract(eye, center));
    Vector i = cross_product(up, k);
    Vector j = cross_product(k, i);
    OOMatrix m1 = OOMatrixConstruct
    (
        i.x,    j.x,    k.x,    0.0,
        i.y,    j.y,    k.y,    0.0,
        i.z,    j.z,    k.z,    0.0,
        -eye.x, -eye.y, -eye.z, 1.0
    );
    [self multModelView: m1];
    return;
}

Referenced by OOGLLookAt().

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multModelView:

- (void) multModelView:

(OOMatrix)

matrix

Definition at line 605 of file OOOpenGLMatrixManager.m.

                      : (OOMatrix) matrix
{
    matrices[OOLITE_GL_MATRIX_MODELVIEW] = OOMatrixMultiply(matrix, matrices[OOLITE_GL_MATRIX_MODELVIEW]);
    [self updateModelView];
}

Referenced by OOGLMultModelView().

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multProjection:

- (void) multProjection:

(OOMatrix)

matrix

Definition at line 605 of file OOOpenGLMatrixManager.m.

                       : (OOMatrix) matrix
{
    matrices[OOLITE_GL_MATRIX_PROJECTION] = OOMatrixMultiply(matrix, matrices[OOLITE_GL_MATRIX_PROJECTION]);
    [self updateProjection];
}

Referenced by OOGLMultProjection().

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orthoLeft:right:bottom:top:near:far:

- (void) orthoLeft:		(double)	l
right:		(double)	r
bottom:		(double)	b
top:		(double)	t
near:		(double)	n
far:		(double)	f

Definition at line 605 of file OOOpenGLMatrixManager.m.

                  : (double) l right: (double) r bottom: (double) b top: (double) t near: (double) n far: (double) f
{
    if (l == r || t == b || n == f) return;
    [self multProjection: OOMatrixConstruct
    (
        2/(r-l),    0.0,        0.0,        0.0,
        0.0,        2/(t-b),    0.0,        0.0,
        0.0,        0.0,        2/(n-f),    0.0,
        (l+r)/(l-r),    (b+t)/(b-t),    (n+f)/(n-f),    1.0
    )];
}

Referenced by OOGLOrtho().

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perspectiveFovy:aspect:zNear:zFar:

- (void) perspectiveFovy:		(double)	fovy
aspect:		(double)	aspect
zNear:		(double)	zNear
zFar:		(double)	zFar

Definition at line 605 of file OOOpenGLMatrixManager.m.

                        : (double) fovy aspect: (double) aspect zNear: (double) zNear zFar: (double) zFar
{
    if (aspect == 0.0 || zNear == zFar) return;
    double f = 1.0/tan(M_PI * fovy / 360);
    [self multProjection: OOMatrixConstruct
    (
        f/aspect,   0.0,    0.0,                0.0,
        0.0,        f,  0.0,                0.0,
        0.0,        0.0,    (zFar + zNear)/(zNear - zFar),  -1.0,
        0.0,        0.0,    2*zFar*zNear/(zNear - zFar),    0.0
    )];
}

Referenced by OOGLPerspective().

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popModelView

- (OOMatrix) popModelView

Definition at line 605 of file OOOpenGLMatrixManager.m.

{
    matrices[OOLITE_GL_MATRIX_MODELVIEW] = [modelViewStack pop];
    [self updateModelView];
    return matrices[OOLITE_GL_MATRIX_MODELVIEW];
}

Referenced by OOGLPopModelView().

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popProjection

- (OOMatrix) popProjection

Definition at line 605 of file OOOpenGLMatrixManager.m.

{
    matrices[OOLITE_GL_MATRIX_PROJECTION] = [projectionStack pop];
    [self updateProjection];
    return matrices[OOLITE_GL_MATRIX_PROJECTION];
}

Referenced by OOGLPopProjection().

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pushModelView

- (void) pushModelView

Definition at line 605 of file OOOpenGLMatrixManager.m.

{
    [modelViewStack push: matrices[OOLITE_GL_MATRIX_MODELVIEW]];
}

Referenced by OOGLPushModelView().

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pushProjection

- (void) pushProjection

Definition at line 605 of file OOOpenGLMatrixManager.m.

{
    [projectionStack push: matrices[OOLITE_GL_MATRIX_PROJECTION]];
}

Referenced by OOGLPushProjection().

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resetModelView

- (void) resetModelView

Definition at line 605 of file OOOpenGLMatrixManager.m.

{
    matrices[OOLITE_GL_MATRIX_MODELVIEW] = kIdentityMatrix;
    [self updateModelView];
}

Referenced by OOGLResetModelView().

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resetProjection

- (void) resetProjection

Definition at line 605 of file OOOpenGLMatrixManager.m.

{
    matrices[OOLITE_GL_MATRIX_PROJECTION] = kIdentityMatrix;
    [self updateProjection];
}

Referenced by OOGLResetProjection().

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rotateModelView:axis:

- (void) rotateModelView:		(GLfloat)	angle
axis:		(Vector)	axis

Definition at line 605 of file OOOpenGLMatrixManager.m.

                        : (GLfloat) angle axis: (Vector) axis
{
    [self multModelView: OOMatrixForRotation(axis, angle)];
}

Referenced by OOGLRotateModelView().

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rotateProjection:axis:

- (void) rotateProjection:		(GLfloat)	angle
axis:		(Vector)	axis

Definition at line 605 of file OOOpenGLMatrixManager.m.

                         : (GLfloat) angle axis: (Vector) axis
{
    [self multProjection: OOMatrixForRotation(axis, angle)];
}

Referenced by OOGLRotateProjection().

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scaleModelView:

- (void) scaleModelView:

(Vector)

scale

Definition at line 605 of file OOOpenGLMatrixManager.m.

                       : (Vector) scale
{
    [self multModelView: OOMatrixForScale(scale.x, scale.y, scale.z)];
}

Referenced by OOGLScaleModelView().

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scaleProjection:

- (void) scaleProjection:

(Vector)

scale

Definition at line 605 of file OOOpenGLMatrixManager.m.

                        : (Vector) scale
{
    [self multProjection: OOMatrixForScale(scale.x, scale.y, scale.z)];
}

Referenced by OOGLScaleProjection().

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standardMatrixUniformLocations:

- (NSArray *) standardMatrixUniformLocations:

(GLhandleARB)

program

Definition at line 605 of file OOOpenGLMatrixManager.m.

                                           : (GLhandleARB) program
{
    GLint location;
    NSUInteger i;
    NSMutableArray *locationSet = [[[NSMutableArray alloc] init] autorelease];
    
    OO_ENTER_OPENGL();
    
    for (i = 0; i < OOLITE_GL_MATRIX_END; i++) {
        location = glGetUniformLocationARB(program, ooliteStandardMatrixUniforms[i]);
        if (location >= 0) {
            if (i == OOLITE_GL_MATRIX_NORMAL)
            {
                [locationSet addObject:
                    [NSArray arrayWithObjects:
                        [NSNumber numberWithInt: location],
                        [NSNumber numberWithInteger: i],
                        @"mat3",
                        nil]];
            }
            else
            {
                [locationSet addObject:
                    [NSArray arrayWithObjects:
                        [NSNumber numberWithInt: location],
                        [NSNumber numberWithInteger: i],
                        @"mat4",
                        nil]];
            }
        }
    }
    return [[NSArray arrayWithArray: locationSet] retain];
}

syncModelView

- (void) syncModelView

Definition at line 605 of file OOOpenGLMatrixManager.m.

{
    OO_ENTER_OPENGL();
    OOGL(glMatrixMode(GL_MODELVIEW));
    GLLoadOOMatrix([self getModelView]);
    return;
}

Referenced by OOGLLoadModelView(), OOGLLookAt(), OOGLMultModelView(), OOGLPopModelView(), OOGLPushModelView(), OOGLResetModelView(), OOGLRotateModelView(), OOGLScaleModelView(), and OOGLTranslateModelView().

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syncProjection

- (void) syncProjection

Definition at line 605 of file OOOpenGLMatrixManager.m.

{
    OO_ENTER_OPENGL();
    OOGL(glMatrixMode(GL_PROJECTION));
    GLLoadOOMatrix([self getProjection]);
    return;
}

Referenced by OOGLFrustum(), OOGLLoadProjection(), OOGLMultProjection(), OOGLOrtho(), OOGLPerspective(), OOGLPopProjection(), OOGLPushProjection(), OOGLResetProjection(), OOGLRotateProjection(), OOGLScaleProjection(), and OOGLTranslateProjection().

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translateModelView:

- (void) translateModelView:

(Vector)

vector

Definition at line 605 of file OOOpenGLMatrixManager.m.

                           : (Vector) vector
{
    OOMatrix matrix = kIdentityMatrix;
    matrix.m[3][0] = vector.x;
    matrix.m[3][1] = vector.y;
    matrix.m[3][2] = vector.z;
    [self multModelView: matrix];
}

Referenced by OOGLTranslateModelView().

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translateProjection:

- (void) translateProjection:

(Vector)

vector

Definition at line 605 of file OOOpenGLMatrixManager.m.

                            : (Vector) vector
{
    OOMatrix matrix = kIdentityMatrix;
    matrix.m[0][3] = vector.x;
    matrix.m[1][3] = vector.y;
    matrix.m[2][3] = vector.z;
    [self multProjection: matrix];
}

Referenced by OOGLTranslateProjection().

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updateModelView

- (void) updateModelView

implementation

Provided by category OOOpenGLMatrixManager(Private).

Definition at line 605 of file OOOpenGLMatrixManager.m.

{
    valid[OOLITE_GL_MATRIX_MODELVIEW_PROJECTION] = NO;
    valid[OOLITE_GL_MATRIX_NORMAL] = NO;
    valid[OOLITE_GL_MATRIX_MODELVIEW_INVERSE] = NO;
    valid[OOLITE_GL_MATRIX_PROJECTION_INVERSE] = NO;
    valid[OOLITE_GL_MATRIX_MODELVIEW_PROJECTION_INVERSE] = NO;
    valid[OOLITE_GL_MATRIX_MODELVIEW_TRANSPOSE] = NO;
    valid[OOLITE_GL_MATRIX_PROJECTION_TRANSPOSE] = NO;
    valid[OOLITE_GL_MATRIX_MODELVIEW_PROJECTION_TRANSPOSE] = NO;
    valid[OOLITE_GL_MATRIX_MODELVIEW_INVERSE_TRANSPOSE] = NO;
    valid[OOLITE_GL_MATRIX_PROJECTION_INVERSE_TRANSPOSE] = NO;
    valid[OOLITE_GL_MATRIX_MODELVIEW_PROJECTION_INVERSE_TRANSPOSE] = NO;
}

updateProjection

- (void) updateProjection

implementation

Provided by category OOOpenGLMatrixManager(Private).

Definition at line 605 of file OOOpenGLMatrixManager.m.

{
    valid[OOLITE_GL_MATRIX_MODELVIEW_PROJECTION] = NO;
    valid[OOLITE_GL_MATRIX_PROJECTION_INVERSE] = NO;
    valid[OOLITE_GL_MATRIX_MODELVIEW_PROJECTION_INVERSE] = NO;
    valid[OOLITE_GL_MATRIX_PROJECTION_TRANSPOSE] = NO;
    valid[OOLITE_GL_MATRIX_MODELVIEW_PROJECTION_TRANSPOSE] = NO;
    valid[OOLITE_GL_MATRIX_PROJECTION_INVERSE_TRANSPOSE] = NO;
    valid[OOLITE_GL_MATRIX_MODELVIEW_PROJECTION_INVERSE_TRANSPOSE] = NO;
}

Member Data Documentation

matrices

- (OOMatrix matrices[OOLITE_GL_MATRIX_END])

private

Definition at line 66 of file OOOpenGLMatrixManager.h.

modelViewStack

- (OOOpenGLMatrixStack*) modelViewStack

private

Definition at line 68 of file OOOpenGLMatrixManager.h.

projectionStack

- (OOOpenGLMatrixStack*) projectionStack

private

Definition at line 69 of file OOOpenGLMatrixManager.h.

valid

- (BOOL valid[OOLITE_GL_MATRIX_END])

private

Definition at line 67 of file OOOpenGLMatrixManager.h.

---

The documentation for this class was generated from the following files:

• src/Core/OOOpenGLMatrixManager.h
• src/Core/OOOpenGLMatrixManager.m